Nailing gun



FIG. 1 is a perspective view of a nailing gun showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view of the nailing gun in condition of use, the broken line showing of environmental structure being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a nailing gun, as shown and described. 